Dump-car.



W. A. GASWELL. DUMP GAR.

' APPLIOATION FILED .TURB 18, 100B. 990,930. Patented Apr. 18, 1911.

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W. A. CASWBLL.

DUMP GAR.

APPLICATION FILED JUNE 18, 1908.

yPatented Apr. 18, 1911.

3 SHEETS-SHBET Z.

W. A. GASWELL y DUMP CAR.

APPLICATION FILED JUNI: 1s, 190s.

Patented Apr. 18, 1911.

I UNITED STATES PATENT OFFICE.

WILLIAM A.. CASWELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL DUMP CAR COMPANY, A CORPORATION OF MAINE.

DUMP-CAR. f

Specification of Letters Patent.

Patented Apr. 18, 1911.

T0 all whom it 'may concern:

Be it-known that I, 1WILLIAM A. CAswELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and use ful Improvements in Dump-Cars, of which thefolloiving is a specification.

yThe object of my invention is 'to provide a Anew and improved door supporting and operating mechanism for dump cars. This object and various others will be -made apparent in the following specification and claims, taken in connection with 'the accompanying drawings, in which- Figure 1 is a'cross section of a dump car having my improvement embodied therein. Fig. 1a is a section on the line 1, 1, looking in the direction of the arrows. Fig. 2 is an end view of the car. Fig. 3 is a section taken on the line 3, 3 of Fig. 2, looking in the direction of the arrows.

In the particular embodiment of my invention which I have chosen to illustrate and describe, the car isY of the. gondola type, the floor being composed entirely, or in part, of dumping floorsections 15 hinged along the longitudinal axis 16 overthe center l 17. The inclined bracing members 1S eirK end from the under framework of the car to ,the side sills. Each one of these inclined members has a track 19 pivoted thereon at the point 20. The cross section of the track 19 has an inverted U shape, as shown in Fig. 1, thesides thereof embracing the inclined member 18 when in thel position shown at the left of Fig. 1, that is, when the dumping door is open. The inner or lower end of the member 19 is beveled., asindicated by the reference number 22, and rests on the shoulders 23 when down in the osition shown at the left of Fig. 1. This en of the member 19 also has an upturned projection 21 which acts as a seat to support the shaft 26, presently to be described. `It Will be observed that `tliepivoted track 19 can be tilted about its aiii; 20 until its outer extremity will rest on the member 18. Thus, it will be seen that the movement of the track 19 is limited in both directions by positive stops, .on the'one side by the shoulders 23 and on the other side by the member 18 where the 'outer extremity of the track 19 comes in contact with it.

, On the under side of the door 15 is a short rack 24 extending transversely, and opposite .this is a slotted member 25, also extending 1n the same direction. A longitudinal shaft 26 extends through the slots 25 and carries gear pinions 26 fixed on the shaft and which engage the aforesaid racks 24. Between consecutive dumping doors 15 the shaft 26 has offset portions 28 connected to the main part of the shaft by the cranked parts 27. The offsets 28 carry flanged rollers 29, these rollers riding upon the pivoted tracks 19. The end sill 3() of the car has an inclined slot 31 on each side through which the end offset 28 projects. At the end of the car this offset part 28 of the shaft 26 carries a ratchet wheel 35 fixed on the shaft. The lever 33 also loosely engages the shaft at one end and has a pawl 34 adapted to engage the ratchet 35. The shaft 28 also carries a dog 36 and the end sill 30 has a row of teeth 32 below the inclined slot 31, adapted to be engaged by said dog.

When the-door is in open position, as indicated at the left of Fig. 1, it will rest on the shaft 26, which in turn will hang by the offset 28 on the horn 21 at the end of the member 19. The member 19 in turn may be supported by the shoulders 23. When it is desired to close the door, the lever 33 will be rotated in a clockwise direction, as viewed at the left of Fig. 2. This will throw the shaft 26 up, the fulcrum being the offset portion 28. But by reason of the engagement of the gear pinion 26 with the rack 24 the shaft 26 will be advanced along,t the slot 25 away from the door 4hinge 16. This will cause the offset 28 to move upwardy alongthe incline member 19, such movement being facilitated by the rollers 29. When the roller 29 reaches the top of the inclined pivoted track 19,-inasmuch as it sustains the weight of thedoors-it will tilt the pivoted track 19 into the positionshown on the right of Fig. 1. At this time the pivoted track 19 will come up into a level position. e

It will be observed that the longitudinal shaft 26 extends under the door 15 close to4 I its outer edge when the door is closed; that the cranks 27 stand vertically, supporting the weight of the load'on the doors by a direct thrust, and that these cranks 27 are in turn supported by theV `pset portions 28 which rest on the pivoted tracks 19. It will also be observed that iffV this position the offsets 28 have no tendency vto roll ofi` from the pivotd track 19, for at this time it is in 1. In a dump car, a hinged dumping door,

a supporting shaft under the door parallel' to the hinge axis thereof, said shaft having an offset portion, a transverse track under said offset ortion, 'means of engagement between the shaft and the door, operating to cause said shaft to move bodily on said track.

2. In a dump ear, a hinged dumping door, a supporting shaft under the door parallel to the hinge axis thereof, said shaft having an offset portion beyond the door, a transverse track under said offset portion along which it is adapted to be displaced, a rack on the under side of the door, a gear on' the shaft engaging said rack, means to rotate said shaft, said rotation through the engagement between said gear and rack causing said shaft to move bodily on said track.

3. In a dump car, a hinged dumping door, a supporting shaft under the door parallel to the hinge axis thereof, a rack on the under side of the door, a. gear pinion on the shaft engaging said rack, an offset on the said shaft, a transverse track on which the offset rests, and meansto rotate the offset causingsaid shaft to move bodily on said track. l 4. In a dump car, a -hinged dumping door, a supporting shaft-under the door parallel -to the hinge axis, a pivoted transverse track bn which the shaft rests, and stops to limit the movement of the pivoted track.`

5. In a dump car, a hinged dumping door, a supporting shaft under the door parallel to the hinge axis thereof, a transverse meinber under the shaft, a track pivoted at an intermediate point thereof on said member, and stops on the member to limit the rotation of the track in either direction, the track having a level position when in contact with one stop andl an inclined position when in Contact Wit-h the other.

6. In adump car, a hinged dumping door, a supporting shaft under the door parallel to the hinge axis thereof, a transverse niember under the shaft, and atrack pivoted on the member, said track having its cross section in the shape of an inverted U with the sides thereof embracing the said member. 7 In a dump car, a hinged dumping-door, a supporting shaft under the door parallel to the hinge axis thereofsaid shaft having. an offset portion beyond the door, a transverse track under said offset portion along which it is adapted to be-displaced, a rack on the under side of the door, a gear on the shaft engaging said rack, a slottedlinember ixedto the door alongside the rack and embracing the shaft, and means to move the shaft and thereby operate thedoor.

8. In a dump car, a hinged dumping door,`

9. In a dump car, a hinged dumping door,

a supporting shaft under the door parallel to the hinge axis, a pivoted transverse track on which the shaft rests, said track having one end turned up to confine the movement ofthe shaft thereon, and stops to limit the movement of the pivoted track.

10. In a dump car, ay hinged dumping door, a supporting shaft under the door' parallel to the hinge axis'thereof, a transverse supporting track under the shaft, and means connecting the door 'and the shaft, whereby rotation of the latter compels reciprocation of said shaft.

11.- In a car, a hinged dumping door, av

shaft beneath the door and parallel to the hinge axis thereof, transverse tracks, said shaft having a door contacting section and a track contacting section, said sections being axially out of line, a gear wheel ixedly secured upon said door contacting section, a. rack upon said door meshing with said gear, and means for rotating said shaft.

12. In a car, a hinged dumping door, a

shaft beneath the door and parallel to the hinge axis thereof, transverse tracks, said shaft having a door contacting section and a track contacting section, said sections being axially out of line, a gear wheel fixedly secured.' upon said door contacting section, a. rack upon said door meshing with said gear, and mea-ns for rotating-said shaft upon the track contactingl section as an axis.

18. In a car of the class described, a hinged door, a supportingtrack beneath said door. door supporting devices between said track and said door` andv means for moving said door supporting devices and thereby also moving said track.

14. In a car of the class described, a dump door, a movable track beneath said door, a door operatingdevice'supported upon said track, said track and door operating device having no tendency to move out of door supporting position, and means to displace said supporting device and therethfsh' dum' support-ing positions when Said itnvictrs uw Slightly moved from Said sup- [imt'ing pristons, said truuk heilig adapted tu ruido smid Supporting devices intn their suiipm'tng p f'itio'ns 'm .the operation of closing Suid door.

It. tu :i cui' Ot the Class; dfscrihed, u

hilgjvd dumping' donn supporting dtvces t'ui- :luid dum'. und :i mumble tx'iwk adapted to g'irlidtrinid 4wuppm'tingdlvitwsto :md from tht-ii' suppurling pnsitmiii, Suid Supporting dtvitts lit-ing adapted t0 move Suid track to it. pmititm in which t holds them in a`stzlble vmiditimi supporting' Suid door.

tu t tim my wht-roofR I have subscribed Ilmr Iilllll.

WHLI'M UASWELL.

V i t mossos:

ANNA L. SAVOIE, LHJMN A. Knsm. 

